To encourage the children to identify specific actions that they can do to show God's presence to some part of the world that they are particularly concerned about
The children will identify one wish that they have for our world and then commit themselves to doing something practical in order to help bring it about.
Keep the paper chain in a visible place until the season of Lent starts, and then break open and read one link during your Lenten sessions as a group action that the children could do during Lent.
If there are children in your group with special needs (physical, visual, hearing, language, or behavioral disabilities), adapt the activity accordingly.